Finalize Graph

[Cwang4749]

• Total = total value of all stocks and balance at that time
  - [ ] If any new stocks were bought, include data starting from when bought
  - [ ] If any new stocks sold, disregard data starting from when sold
• X-axis labels has time (alternative to directly modifying chart, use separate indicator)
• Use current total as last data point
  • fix timing of total label and appending as data point